The deposits of the useful minerals & rocks; their origin, form, and content . unster. Entstehung der Vogelsberger Eisenerze, Zeit. f. prakt. Geol.,1905, XIII. p. 413. The limonite deposits at Vogelsberg are of somewhat difEerent originfrom bean ore. These deposits, which are genetically and spacially mostintimately associated with basalt, have in the Vogelsberg district a very 1 Log. 1900. THE BEAN-ORE BEDS 999 considerable extent. All of them lie near the surface, in which positionthey are usually overlaid by shallow Diluvial and Alluvial beds. Onlyexceptionally do several beds occur o
The deposits of the useful minerals & rocks; their origin, form, and content . unster. Entstehung der Vogelsberger Eisenerze, Zeit. f. prakt. Geol.,1905, XIII. p. 413. The limonite deposits at Vogelsberg are of somewhat difEerent originfrom bean ore. These deposits, which are genetically and spacially mostintimately associated with basalt, have in the Vogelsberg district a very 1 Log. 1900. THE BEAN-ORE BEDS 999 considerable extent. All of them lie near the surface, in which positionthey are usually overlaid by shallow Diluvial and Alluvial beds. Onlyexceptionally do several beds occur one above the other, and when that isthe case such are separated from one another by layers of tuS poor in types of deposit are known, the relatively primary deposit, and thesecondary deposit which has resulted from the disintegration and recon-centration of the primary deposit. Since the Vogelsberg deposit, a sectionof which is illustrated in Fig. 409, has entirely resulted from the weatheringand decomposition of the basalt and its tuffs, in the case of the primary. Fig. 409. —Section of the linionite deposit at the Ernestiue miue near Niederohmen notfar from Giesseu in the Vogelsberg. Zeit. f. prakt. Geol., 1887. Alluvium (a) Rarth, soil. /•(/)) ditterent coloured loams. I (c) river rubble, gravel and bauxite J (,;) piay^y impure limonite I gg^.Q^j^^ deposit. (_ (e) poor clayey patches m a I fC/)^iasalttuft. ~> Tertiary (/() limonite veins, and crusts Primary deposit. ^ coloured dark by manganese. J deposits the much deformed basalt exhibits a covering of ferric hydroxide,while the centre is clayey and decomposed. The individual ore-bodiesare separated from each other by clay. The river-concentrated deposits are found in terraces along the presentriver valleys. They consist of ferruginous, argillaceous masses with a fewboulders and numerous limonite concretions in the form of lumps, nodules,and geodes, varying in size from a pea to a mans head.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou
